JP2015091228A - Oil and fat composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an oil and fat composition good in absorptivity, easy to process without deposition of oil and fat crystal even at ordinary temperature, stable, and good in flavor although the fat composition has no side effect such as failure of gastrointestinal tract such as diarrhea, and to provide a manufacturing method therefor.SOLUTION: There is provided an oil and fat composition containing, in the constituent fatty acid residue, caprylic acid and/or capric acid of 10 to 40 wt.%, palmitic acid of 15 to 40 wt.%, and oleic acid of 20 to 60 wt.% and having the content of α-linolenic acid of less than 5 wt. and the total amount of palmitic acid residue amount bound to 2-position/palmitic acid residue (mass ratio) of 0.4 to 0.95, where the total content of MPM, OPM, and OPO triglyceride is 30 to 90 wt.% and the content of MMM triglyceride is 10 wt.% or less in the whole oil and fat composition.

Description

  The present invention relates to an oil and fat composition having good absorbability and a method for producing the same.

  In recent years, with the increasing number of elderly people, each food manufacturer is making efforts to manufacture and sell nursing foods. In particular, elderly and post-operative patients have a weak digestive absorption function, and often cannot take a large amount of high-calorie foods such as fats and oils. As a result, when weight loss occurs, the immune function is reduced, and an easily infected state (a state susceptible to infection) occurs. What is required of such a nursing food for people is an increase in body weight due to “giving calories”. However, natural fats and oils composed of long chain fatty acids cannot be said to have good digestibility. Similarly, foods that are well-absorbed and effective for efficient caloric intake are also demanded for infants and pregnant and lactating women.

  For example, it is known as an oil and fat with good absorbability, which can absorb calories sufficiently even in elderly people and patients after surgery, has a specific metabolic pathway that is quick to digest, and is useful as an immediate energy source. Medium chain fatty acid triglycerides (MCT) can be mentioned, but it is known to cause side effects such as rapid absorption, gastrointestinal upset due to metabolism (diarrhea, etc.), and formation of ketone bodies when ingested in large amounts. In addition, while it can be used immediately as energy, it has no effect of weight gain, and lacks the mellowness and deliciousness of the characteristic flavor of fats and oils.

  Therefore, it contains at least 30% by weight of palmitic acid residues and / or stearic acid residues, of which at least 30% by weight of the total palmitic acid residues and / or stearic acid residues are bonded to the 2-position, and the remaining fatty acids A triglyceride mixture in which the residues are mainly unsaturated fatty acids, in particular oleic acid residues and linoleic acid residues, and a triglyceride mixture in which at least 10% by weight of the first and third positions are medium chain fatty acids (C8 to C14), A method for obtaining a triglyceride composition that can be substituted for milk fat, obtained by transesterification specific to 3-position (Patent Document 1), a product rich in USU and / or SSU, and other than palmitic acid and / or stearic acid Contains a large amount of triglyceride having 1 to 3 positions of acid but 40% by weight or more of C16 or higher saturated fatty acid at 2 position. A method for producing a triglyceride composition in which 40% by weight or more of the total amount of saturated fatty acids is in the 2-position by removing trisaturated triglycerides by enzymatic transesterification with fats and oils (Patent Document) 2). However, neither of these patent documents describes the content of C8 and / or C10 which is decomposed and rapidly absorbed in the stomach, and in the examples, the content of C8 and / or C10 is about 2 to 2. Since it is 3%, there is a problem that the absorbency is not good.

  Furthermore, the fats and oils which transesterified milk fat and the fats and oils comprised by the medium chain fatty acid and the long chain fatty acid are disclosed (patent document 3). However, since 10 to 90% by weight of milk fat is used as a raw material, crystals are precipitated at room temperature, resulting in poor working efficiency, and the use of the fat composition with a milk fat flavor is limited. There is a problem that the cost of raw materials is high. In addition, the whole fatty acid residue in the oil / fat composition contains 5 to 55% by mass of α-linolenic acid and 2 to 40% by mass of medium chain fatty acid, thereby reducing body fat accumulation and serving as an edible oil. An oil and fat composition excellent in cooking suitability and flavor has been disclosed (Patent Document 4). However, since this oil and fat composition contains a relatively large amount of α-linolenic acid, there is a problem that the stability to heat, light, oxygen and the like is poor.

International Publication No. 94/026855 International Publication No. 94/026854 International Publication No. 89/09596 JP 2001-161265 A

  The object of the present invention is a stable and savory oil and fat composition that has good absorbability and is easy to process without precipitation of oil crystal even at room temperature, despite no adverse effects such as gastrointestinal upset (such as diarrhea). And a method of manufacturing the same.

  As a result of intensive studies to solve the above problems, the present inventors have included a specific amount of caprylic acid and / or capric acid, palmitic acid, oleic acid in the constituent fatty acid residues in the oil and fat composition, The content of α-linolenic acid is less than a specific amount, and the weight ratio of palmitic acid residue amount / palmitic acid residue total amount bound to the 2-position is within a specific range. A triglyceride in which the position is palmitic acid and the 1st and 3rd positions are caprylic acid and / or capric acid, the 2nd position is palmitic acid, the 1st or 3rd position is caprylic acid or capric acid, and the 1st or 3rd position is oleic acid Triglycerides containing a specific amount of triglycerides, which are triglycerides, 2-position palmitic acid and 1-position and 3-ole oleic acid in total, and all the fatty acids bound are caprylic acid and / or capric acid The content is less than a specific amount, so it has good absorbability despite the absence of side effects such as gastrointestinal upset (such as diarrhea), and it is stable and easy to process without precipitation of fat and oil crystals even at room temperature. It discovered that the fats and oils composition provided with the characteristic of good flavor could be obtained, and came to complete this invention.

  That is, in the first aspect of the present invention, caprylic acid and / or capric acid is 10 to 40% by weight, palmitic acid is 15 to 40% by weight, and oleic acid is 20 to 60% by weight in the constituent fatty acid residues in the oil and fat composition. The content of α-linolenic acid is less than 5% by weight, and the amount of palmitic acid residue / palmitic acid residue (weight ratio) bound to the 2-position is 0.4 to 0.95, In the whole oil and fat composition, the total content of MPM, OPM and OPO triglycerides is 30 to 90% by weight, and the content of MMM triglycerides is 10% by weight or less (provided that M: caprylic acid or capric acid, P : Palmitic acid, O: oleic acid). A preferred embodiment relates to the oil and fat composition as described above, wherein the content of OPM is 10 to 90% by weight in the whole oil and fat composition. The second of the present invention is a component (A) that is at least one selected from the group consisting of medium chain fatty acid triglycerides (MCT), caprylic acid and capric acid, and palm oil, palm fractionated oil, palm oil or palm fractionated oil. Transesterified oil, random transesterified palm stearin and oleic acid transesterified oil, lard, lard fractionated oil, rice oil, cottonseed oil, peanut oil, sesame oil, olive oil, corn oil, soybean oil, sunflower oil, high oleic sunflower oil, Component (B) which is at least one member selected from the group consisting of safflower oil, high oleic safflower oil, rapeseed oil, beef tallow, cacao butter, tripalmitin, palmitic acid and oleic acid in the entire mixture The total content of (A) and component (B) is 70 to 100% by weight and the weight ratio of component (A) / component (B) is A mixture containing 0/90 to 60/40 and further containing less than 10% by weight of component (C) consisting of milk fat is transesterified with a lipase having a 1,3-position specific lipase. The method for producing an oil / fat composition described above, wherein at least one of the component (A) and the component (B) is oil or tripalmitin. 3rd of this invention is related with the foodstuff which contains 0.5-30 weight% of said oil-fat compositions in the whole foodstuff. More preferably, the present invention relates to the food as described above, which is any one of a nursing food for high-capacity ingestion for the elderly, enteral nutrition, and infant formula or a formula for pregnant and lactating women.

  According to the present invention, although there are no side effects such as gastrointestinal upset (diarrhea, etc.), the oil composition has good absorbability, is easy to process without precipitation of oil crystals even at room temperature, and is stable and savory. And a manufacturing method thereof.

  Hereinafter, the present invention will be described in more detail. The oil and fat composition of the present invention (hereinafter also referred to as “the present oil and fat composition”) contains a specific amount of caprylic acid and / or capric acid, palmitic acid and oleic acid in the constituent fatty acid residues in the oil and fat composition. , Α-linolenic acid content is less than a specific amount, the weight ratio of palmitic acid residue amount / palmitic acid residue total amount bound to the 2-position is within a specific range, and 2 A triglyceride in which the position is palmitic acid and the 1st and 3rd positions are caprylic acid and / or capric acid (hereinafter also referred to as MPM. M: caprylic acid or capric acid, P: palmitic acid), 2nd position is palmitic acid and 1 A triglyceride (hereinafter also referred to as OPM) where caprilic acid or capric acid is located at the 3rd or 3rd position and oleic acid at the 1st or 3rd position (M: caprylic acid or capric acid, P: palmitic acid, O: oleic acid. Contains a specific amount of triglyceride (hereinafter also referred to as OPO, P: palmitic acid, O: oleic acid) in which 2-position is palmitic acid and 1-position and 3-position are oleic acid, and all the fatty acids to be bound are caprylic acid And / or the content of triglyceride which is capric acid (hereinafter also referred to as MMM; M: caprylic acid or capric acid) is less than a specific amount.

  The caprylic acid is a linear saturated fatty acid having 8 carbon atoms, and the capric acid is a linear saturated fatty acid having 10 carbon atoms, all of which are naturally contained in coconut oil, palm kernel oil, milk fat, etc. It is. The content of the caprylic acid and / or capric acid is preferably 10 to 40% by weight, more preferably 15 to 30% by weight, still more preferably 15 to 25% by weight, based on the total constituent fatty acid residues in the oil and fat composition. If it is less than 10% by weight, the absorbability may be deteriorated, and if it is more than 40% by weight, the flavor may be deteriorated. Here, caprylic acid and capric acid are preferably contained at 60/40 to 100/0 (weight ratio), more preferably 80/20 to 100/0 (weight ratio), and 90/10 to 100/0 ( Weight ratio) is more preferable, and 99/1 to 100/0 (weight ratio) is particularly preferable. When caprylic acid / capric acid (weight ratio) is smaller than 60/40, the absorbability may be deteriorated.

  The palmitic acid is a white wax-like solid, is widely distributed in animals and plants, and is a straight-chain saturated fatty acid having 16 carbon atoms that is particularly abundant in wood wax and palm oil. The content of palmitic acid is preferably 15 to 40% by weight, more preferably 20 to 35% by weight, and still more preferably 20 to 30% by weight in the total constituent fatty acid residues in the oil and fat composition. If it is less than 15% by weight, the absorbability may deteriorate. On the other hand, when the amount is more than 40% by weight, fat and oil crystals may precipitate at room temperature and workability may deteriorate.

  The oleic acid is a monounsaturated fatty acid having 18 carbon atoms that is abundant in olive oil, high oleic safflower oil, high oleic sunflower oil, and the like. The content of the oleic acid is preferably 20 to 60% by weight, more preferably 30 to 50% by weight, and still more preferably 35 to 45% by weight, based on the total constituent fatty acid residues in the oil and fat composition. If the amount is less than 20% by weight, the amount of the high melting point component in the oil and fat composition is relatively increased, so that oil and fat crystals may precipitate at room temperature and workability may be reduced. If it is more than 60% by weight, the raw material cost may become too high.

  The α-linolenic acid is a linear 18 carbon unsaturated fatty acid having three cis double bonds, which is abundant in perilla oil, sesame oil, linseed oil and the like. In the present fat composition, the content of α-linolenic acid should be as small as possible in order to increase stability to heat, light, oxygen, etc., and less than 5% by weight in the total constituent fatty acid residues in the present fat composition. Is preferable, less than 4.5% by weight is more preferable, and less than 3% by weight is still more preferable.

  Further, the weight ratio of the amount of palmitic acid residue / palmitic acid residue bound to the 2-position refers to the palmitic acid bound to the 2-position of triglyceride with respect to the total amount of palmitic acid residues in the constituent fatty acid residues of the oil / fat composition. It is a ratio of the amount of acid residues, which is a value obtained by dividing the total weight of palmitic acid residues bonded to the 2-position by the total weight of palmitic acid residues in the oil or fat composition. In the present fat composition, the weight ratio of the amount of palmitic acid residue / palmitic acid residue combined at the 2-position is preferably 0.4 to 0.95, more preferably 0.5 to 0.95, and 6-0.95 is still more preferable. If it is less than 0.4, the absorbability of the oil and fat composition into the body may deteriorate. On the other hand, if it is larger than 0.95, the production conditions become complicated and the cost may become too high.

  In addition to having the composition of the constituent fatty acid residues as described above, the oil and fat composition of the present invention contains specific amounts of MPM, OPM and OPO.

  The total content of the MPM, OPM and OPO is preferably 30 to 90% by weight, more preferably 30 to 80% by weight, and still more preferably 30 to 70% by weight in the entire oil and fat composition. When the amount is less than 30% by weight, the absorbability may be deteriorated, or the oil and fat crystals may be precipitated at room temperature and may be difficult to process. On the other hand, when the amount is more than 90% by weight, a stable oily and fat composition may not be obtained, or the production cost may be too high. In addition, the amount of lipid components (triglyceride, diglyceride, monoglyceride, fatty acid) in the entire oil and fat composition is 99 to 100% by weight.

  Further, in the oil and fat composition of the present invention, the content of the OPM is preferably 10 to 90% by weight, more preferably 10 to 70% by weight, and still more preferably 10 to 55% by weight in the whole oil and fat composition. . When the amount is less than 10% by weight, the absorbability may be deteriorated, or the oil and fat crystals may be precipitated at room temperature and may be difficult to process. On the other hand, if it is more than 90% by weight, a stable oily and fat composition may not be obtained, or industrial production may not be possible at low cost.

  The oil and fat composition of the present invention should have as little MMM content as possible in order to prevent side effects such as rapid absorption, gastrointestinal upset due to metabolism (diarrhea, etc.), and formation of ketone bodies when ingested in large quantities. The content thereof is preferably 10% by weight or less, more preferably 8% by weight or less, and still more preferably 6% by weight or less in the entire oil or fat composition.

In this invention, as long as the said fatty acid composition and triglyceride composition are satisfy | filled, you may contain fatty acid residues and triglycerides other than the above.
Since the oil and fat composition of the present invention is excellent in absorbability, the effect of weight gain can be expected.

  The manufacturing method of the oil-fat composition of this invention is illustrated below. The oil / fat composition of the present invention can be produced by appropriately mixing various oil / fat raw materials and transesterifying with a 1,3-specific lipase according to a conventional method to obtain a predetermined fatty acid composition and triglyceride composition. .

  For example, as the fat and oil raw material, a component (A) which is a fat or fatty acid serving as a supply source of caprylic acid or capric acid, and a component (B) which is a fat or fatty acid serving as a supply source of palmitic acid or oleic acid are contained. The oil and fat composition of the present invention can be easily obtained by transesterification using the mixture. However, at least one of the component (A) and the component (B) needs to be fat or oil or tripalmitin. Moreover, it is more preferable that the said component (B) contains fats and oils. In the present invention, fatty acid esters such as fatty acid ethyl ester and fatty acid methyl ester can be used as the fatty acid serving as the supply source of the caprylic acid, capric acid, palmitic acid or oleic acid, and the preferred fatty acid ester is fatty acid ethyl ester. It is.

  The component (A) is preferably at least one selected from the group consisting of MCT (medium chain fatty acid triglyceride), caprylic acid and capric acid, and more preferably MCT and / or caprylic acid.

  Further, as the component (B), palm oil, palm fractionated oil, transesterified oil of palm oil or palm fractionated oil, random transesterified palm stearin and oleic acid transesterified oil, lard, lard fractionated oil, rice oil, Cottonseed oil, peanut oil, sesame oil, olive oil, corn oil, soybean oil, sunflower oil, high oleic sunflower oil, safflower oil, high olein safflower oil, rapeseed oil, beef tallow, cacao butter, tripalmitin, palmitic acid and oleic acid It is preferably at least one selected. In addition, a component (B) is easy to adjust to the fatty acid composition etc. which are prescribed | regulated by this invention, and from the viewpoint of being easy to manufacture efficiently, palm oil, palm fractionation oil, palm oil, or transesterification oil of palm fractionation oil, random ester More preferred is at least one selected from exchanged palm stearin and oleic acid transesterified oil, lard and lard fractionated oil.

  In order to obtain the oil and fat composition of the present invention, the total content of the component (A) and the component (B) is preferably 70 to 100% by weight, more preferably 80 to 100% by weight in the entire mixture. If it is less than 70% by weight, it may be difficult to adjust the fatty acid composition or triglyceride composition of the oil or fat composition, or the absorbability of the oil or fat composition may be deteriorated, and further, oil and fat crystals may precipitate at room temperature and be difficult to process. is there.

  The ratio (weight ratio) between the component (A) and the component (B) is preferably 10/90 to 60/40, more preferably 20/80 to 50/50. If the component (A) / component (B) (weight ratio) is less than 10/90, the absorbability may be deteriorated, or the oil and fat crystals may be produced at room temperature, making handling difficult. On the contrary, when component (A) / component (B) (weight ratio) is larger than 60/40, the flavor may be deteriorated or the absorbability may be deteriorated.

  The mixture used for transesterification may contain the component (C) consisting of milk fat, but its content is preferably less than 10% by weight. When the component (C) is contained in an amount of 10% by weight or more in the mixture, not only does the production cost of the transesterified oil and fat, and thus the desired fat and oil composition increase, but the oil and fat crystals appear at room temperature, making handling difficult. In some cases, the obtained fat composition is imparted with a milk fat flavor and its use may be limited.

  Further, the fat and oil mixture to be subjected to transesterification may contain other component (D). Other components (D) include coconut oil, palm kernel oil, fish oil, soybean oil hardened oil and rapeseed oil hardened oil, and at least one of them can be used.

  The oil and fat composition of the present invention comprises the oil and fat and / or fatty acid of the component (A), the component (B) and the component (C), or the transesterification of the oil and / or fatty acid of the component (A) and the component (B). Obtained by transesterification. The transesterification may be carried out according to a conventional method, and it is preferable to use a lipase having 1,3-position specificity for the transesterification. Examples of the lipase used in the present invention include lipases obtained from Alkaligenes, Aspergillus, Mucor, Rhizopus, Thermomyces, Penicillium, Canrida and the like. The transesterification reaction using lipase may be either a column-type continuous reaction or a batch reaction.

  Furthermore, it is preferable to adjust the fatty acid composition and the triglyceride composition to an appropriate range with the blending ratio of the raw oil and fat at the time of transesterification, and the fat and oil composition of the present invention obtained by the transesterification shown above. More preferably, the fatty acids and / or fats and oils are separated or purified by selection of temperature conditions during distillation and / or fractionation.

  Examples of the distillation method include short process thin film distillation and molecular distillation. Moreover, as a classification method, the method of fractionating using organic solvents, such as hexane and acetone, or the method of fractionating without using a solvent can be utilized, and it is not specifically limited.

  In addition, as long as the fats and oils composition of this invention satisfy | fills the fatty acid composition and triglyceride composition prescribed | regulated by this invention, it can also contain edible fats and oils other than the said transesterified fats and oils. Although this edible fat / oil is not particularly limited, it is preferable to use liquid fat / oil from the viewpoint of obtaining a fluid and easy-to-process oil / fat composition. Examples of the edible oil and fat include rapeseed oil, corn oil, soybean oil, rice oil, sunflower oil, sesame oil, olive oil, safflower oil, cottonseed oil, and fractionated oil from which the high melting point of solid fat has been removed. At least one of the above can be used.

  The oil / fat composition of the present invention is not particularly limited as long as it is a food that uses oil / fat, and examples thereof include general foods such as various confectionery products, various cooked products, and various processed foods.

  In addition, the oil and fat composition of the present invention has good absorbability and can be expected to have an effect of weight gain, despite no side effects such as gastrointestinal upset (diarrhea, etc.) compared to conventional edible oils and fats. To the elderly, people with disabilities, enteral nutrients, formula milk, etc., elderly people who tend to lose their physical strength, infants who cannot digest and absorb oils and fats, and nutrients that tend to be deficient Efficient calorie intake is possible even for pregnant and lactating women who need supplementation. In particular, it can be suitably used for high-calorie care foods for elderly people whose fat and oil absorption capacity is declining, such as confectionery such as pudding, cookies and cakes, meat dishes such as hamburgers, fish dishes such as grilled fish, fried eggs, etc. Various cooking items such as hot pot dishes such as egg dishes, curry and stew. The enteral nutrient refers to a nutrient that is digested and absorbed through the digestive tract, and may be either approved as a pharmaceutical product under the Pharmaceutical Affairs Law or treated as food.

  Moreover, the form of the above-mentioned adjusted milk may be either liquid or powder, and for infants, it is adjusted infant formula adapted for various components such as energy, protein, etc., and for pregnant women and lactating women, It may be a milk powder for pregnant and lactating women with enhanced calcium and iron content.

  Although content of the oil-fat composition of this invention in the said foodstuff cannot be generally limited with the form of foodstuff, what is necessary is just to contain 0.5-30 weight% in the whole foodstuff.

  EXAMPLES Hereinafter, the present invention will be described more specifically with reference to examples. However, the present invention is not limited to these examples. In the examples, “parts” and “%” are based on weight.

<Analysis of fatty acid composition>
Methyl esterification was carried out by dissolving 50 mg of fat and oil in 5 ml of isooctane, adding 1 ml of a 0.2 mol / L sodium methylate / methanol solution and reacting at 70 ° C. for 15 minutes. After neutralizing the reaction solution with acetic acid, an appropriate amount of water was added. The organic layer was collected with a glass pipette and gas chromatography (apparatus: “6890N” manufactured by Agilent, column: “CPS-2” manufactured by Quadrex (length 60 m × inner diameter 0.25 mm × film thickness 0.25 μm)) Was analyzed.

<Analysis of triglyceride composition>
10 mg of fat / oil was dissolved in 5 ml of isooctane, and gas chromatography (apparatus: “HP5890” manufactured by Agilent, column: “DB-1” manufactured by Agilent (length 30 m × inner diameter 0.25 mm × film thickness 0.25 μm)) analyzed.

<Analysis of the amount of fatty acid bound to the 2-position of triglyceride>
7.5 g of fat and oil and 22.5 g of ethanol were mixed, 1.2 g of lipase (“Novozyme 435” manufactured by Novozyme) was added, and the mixture was reacted at 30 ° C. for 4 hours. After concentrating the reaction solution, the monoglyceride was separated and concentrated by silica gel column chromatography (“Silica gel 60 (0.063-0.200 mm) for column chromatography” manufactured by Merck). The separated monoglyceride was analyzed for fatty acid composition according to the method for analyzing fatty acid composition.
From the analysis of the fatty acid composition and the analysis of the fatty acid bonded to the 2-position of the triglyceride, the amount (% by weight) of the palmitic acid residue and the palmitic acid residue bonded to the 2-position in the total triglyceride can be respectively obtained. The palmitic acid residue that binds to the 2-position) / (total amount of palmitic acid residue) was calculated.

<Composition analysis of triglycerides such as MPM, OPM, OPO>
20 mg of fats and oils are dissolved in 3 ml of isooctane and gas chromatography (apparatus: “HP 7890” manufactured by Agilent, column: “Ultra ALLOY TRG” manufactured by Frontier Labs (length 30 m × inner diameter 0.25 mm × film thickness 0.1 μm)) Was analyzed. MPM is obtained by multiplying the total amount of triglycerides in which one palmitic acid is obtained and caprylic acid or two capric acids are bound by the above (palmitic acid residue binding at position 2) / (total palmitic acid residue). The total amount of triglyceride in which the amount of triglyceride was obtained and the resulting palmitic acid, oleic acid, and caprylic acid or capric acid were combined one by one (palmitic acid residue bonded at position 2) / (total amount of palmitic acid residue) Is the amount of OPM, and the total amount of triglycerides with one palmitic acid and two oleic acids attached is the above (palmitic acid residue bound at position 2) / (palmitic acid residue total) The value obtained by multiplying by was defined as the amount of OPO triglyceride.

<Evaluation of absorbency>
Seven-week old Wistar male rats were fasted for 16 hours, and 0.3 ml of blood was collected from the jugular vein. Thirty minutes after blood collection, the oil and fat sample was orally administered by gavage at a dose of 6 ml / kg (body weight) in 5 mice in each group. After the sample administration, 0.3 ml blood was collected from each rat jugular vein every 2, 4, 6, 8 hours. The blood sample collected was measured for blood triglyceride concentration using a triglyceride measurement kit (“Triglyceride E Test Wako” manufactured by Wako Pure Chemical Industries, Ltd.) according to a conventional method. The obtained data was calculated by calculating the area under the triglyceride blood concentration-time curve (AUC) from 0 to 8 hours. D. (N = 5) After rejection test by Thompson-test and removing outliers, statistical processing was performed by Dunnett-test.
About evaluation of absorptivity, the Example and the comparative example were evaluated on the following references | standards.
A: Very good absorbability into the body (AUC is 800 or more).
Good: Absorbability into the body is good (AUC is 700 or more and less than 800).
Δ: Slightly inferior in the body (AUC is 600 or more and less than 700).
X: Absorbability into the body is poor (AUC is less than 600).

<Evaluation of the effect of weight gain>
A gastrostomy for sample injection was performed on 8-week-old SD rats. After fasting for 16 hours, body weight was measured, and each group was divided into 4 animals. A nutrient (“Elental” manufactured by Ajinomoto Pharmaceutical Co., Inc.) was continuously administered for 8 days from the gastric fistula (213 ml / kg / day). On days 2-8, fat and oil 57 kcal / kg / day was additionally administered. On the 8th day, the body weight was measured again.
Regarding the evaluation of the effect of weight gain, Examples and Comparative Examples were evaluated according to the following criteria.
A: The change in body weight is + 12% or more, and the effect of weight gain is remarkable.
○: The change in body weight is + 10.5% or more and less than + 12%, and there is an effect of weight gain.
Δ: The change in body weight is + 9% or more and less than + 10.5%, and the effect of weight gain is hardly observed.
X: The change in body weight is less than + 9%, and the effect of weight gain is hardly observed.

<Evaluation of workability>
For evaluation of workability, Examples and Comparative Examples were evaluated according to the following criteria.
A: Oil and fat crystals do not precipitate at room temperature and are easy to process.
○: Fat and oil crystals are slightly precipitated at room temperature, but there is no problem in processing.
(Triangle | delta): Since fat and oil crystals precipitate a little at normal temperature, it may become difficult to process.
X: Fat crystal precipitates at room temperature and is difficult to process.

<Evaluation of flavor>
About evaluation of flavor, the oil-and-fat composition of an Example and a comparative example was evaluated with the following references | standards by eight expert panelists.
A: There is no off-taste and it is very good.
◯: Good with no off-taste.
(Triangle | delta): A slightly strange taste is felt and it is a little inferior.
X: Unpleasant taste is felt and it is bad.

Example 1 Preparation of Oil Composition 1 According to the raw material composition in Table 1, an oil composition 1 was prepared. That is, palm stearin was heated to 90 ° C. under a reduced pressure of 100 mmHg or less to remove moisture and gas components contained in the fats and oils. To 100 parts by weight of this fat, 0.2 parts by weight of sodium methylate (“Sodium Methylate” manufactured by Jinbang Medicine Chemical) was added and stirred at 90 ° C. for 20 minutes under a reduced pressure of 10 mmHg or less. Reaction was performed. The reaction product was washed with water, dried, and decolorized and deacidified according to conventional methods to obtain random transesterified palm stearin. The fat and oil obtained by mixing 10 parts by weight of this random transesterified palm stearin, 50 parts by weight of caprylic acid and 40 parts by weight of oleic acid was dissolved in an equal amount of hexane, and the temperature was adjusted to 50 ° C. To this was added 7.5 parts by weight of lipase having 1,3-position specificity (“Lipozyme RMIM” manufactured by Novozyme), and transesterification was performed at a reaction temperature of 50 ° C. for 38 hours. After the reaction, the enzyme and hexane were removed. The reaction product was decolorized according to a conventional method, and then distilled at 210 ° C. under a reduced pressure of 0.01 mmHg or less to remove fatty acids, whereby an oil and fat composition 1 was obtained.

(Example 2) Oil composition 2
According to the raw material composition of Table 1, an oil and fat composition 2 was produced. That is, the temperature of an oil / fat mixed with 78 parts by weight of purified lard and 22 parts by weight of MCT was adjusted to 50 ° C. To this was added 7.5 parts by weight of lipase having 1,3-position specificity (“Lipozyme RMIM” manufactured by Novozymes), and transesterification was performed at a reaction temperature of 50 ° C. for 11 hours. After the reaction, the enzyme was removed. The reaction product was decolorized according to a conventional method to obtain an oil and fat composition 2.

(Example 3) Oil composition 3
According to the raw material composition of Table 1, an oil and fat composition 3 was produced. That is, fats and oils obtained by mixing 30 parts by weight of random transesterified palm stearin and 70 parts by weight of oleic acid obtained in the same manner as in Example 1 were dissolved in an equal amount of hexane, and the temperature was adjusted to 50 ° C. To this, 7.5 parts by weight of lipase having a 1,3-specificity (“Lipozyme RMIM” manufactured by Novozyme) was added, and transesterification was performed at a reaction temperature of 50 ° C. for 10 hours. After the reaction, the enzyme and hexane were removed. The reaction product was decolorized according to a conventional method, and then distilled at 210 ° C. under a reduced pressure of 0.01 mmHg or less to remove oleic acid to obtain a transesterified oil of random transesterified palm stearin and oleic acid. The fat and oil obtained by mixing 75 parts by weight of the obtained transesterified palm stearin and transesterified oil of oleic acid and 25 parts by weight of MCT was adjusted to 50 ° C. To this was added 7.5 parts by weight of lipase having 1,3-position specificity (“Lipozyme RMIM” manufactured by Novozymes), and transesterification was performed at a reaction temperature of 50 ° C. for 11 hours. After the reaction, the enzyme was removed. The reaction product was decolorized according to a conventional method to obtain an oil and fat composition 3.

(Example 4) Oil composition 4
According to the raw material composition of Table 1, an oil and fat composition 4 was produced. That is, the oil and fat obtained by mixing 78 parts by weight of lard fractionated oil and 22 parts by weight of MCT was temperature-controlled at 50 ° C. To this was added 7.5 parts by weight of lipase having 1,3-position specificity (“Lipozyme RMIM” manufactured by Novozymes), and transesterification was performed at a reaction temperature of 50 ° C. for 11 hours. After the reaction, the enzyme was removed. The reaction product was decolorized according to a conventional method to obtain an oil and fat composition 4.

(Comparative Example 1) Oil composition 5
According to the raw material composition of Table 1, an oil and fat composition 5 was produced. That is, 10 parts by weight of MCT and 90 parts by weight of refined rapeseed oil were mixed and then heated to 90 ° C. under a reduced pressure of 100 mmHg or less to remove moisture and gas components contained in the mixture. To this mixture, 0.2 parts by weight of sodium methylate (“sodium methylate” manufactured by Jinbang Medicine Chemical) was added and stirred at 90 ° C. for 20 minutes under a reduced pressure of 10 mmHg or less to conduct a transesterification reaction. The reaction product was washed with water, dried, and decolorized and deoxidized according to conventional methods to obtain an oil and fat composition 5.

  Fatty acid composition of the oil and fat compositions 1 to 5 obtained as described above, the total content of caprylic acid and capric acid, the ratio of the amount of palmitic acid residue bonded to the 2-position of triglyceride to the total amount of palmitic acid residue, triglyceride Table 1 shows the results of evaluation of the composition and the absorbability, workability, and flavor of the oil and fat compositions 1 to 5. Moreover, the evaluation result of the weight gain of the fats and oils compositions 1 and 5 is shown in Table 1.

  As is apparent from the results in Table 1, the fat and oil compositions 1 to 4 have good absorbency, are easy to process with only a small amount of fat crystals even at room temperature, are stable and have good flavor, and the fat and oil composition 1 is In contrast to the effect of increasing body weight, the oil and fat composition 5 was inferior in absorbability and had little effect on increasing body weight.

(Example 5) Preparation of enteral nutrients Four types of enteral nutrients were prepared using the same oil and fat compositions 1 to 4 as in Examples 1 to 4 according to a conventional method with the composition shown in Table 2. That is, casein Na, an emulsifier, and a thickening polysaccharide were sequentially added to water and dissolved, and then dextrin, dietary fiber, vitamins, minerals, and a pH adjuster were sequentially mixed. Next, the fats and oils compositions 1-4 were added to the said mixture little by little, and it homogenized. In accordance with the usual method, it sterilized and produced the enteral nutrient.

(Example 6) Preparation of child-rearing adjusted milk powder Using the same oil and fat compositions 1 to 4 as in Example 1, four types of child-rearing adjusted milk powder were prepared according to a conventional method with the composition shown in Table 3. That is, whey protein concentrate, lactose, casein Na, vitamins, and minerals were sequentially added and dissolved in skim milk. Next, the fat and oil compositions 1 to 4 were added to the mixture and homogenized. Sterilization and drying were performed according to a conventional method to obtain 300 g of adjusted powdered milk.

Claims (5)

10 to 40% by weight of caprylic acid and / or capric acid, 15 to 40% by weight of palmitic acid, and 20 to 60% by weight of oleic acid in the constituent fatty acid residues in the oil and fat composition, α-linolenic acid The content is less than 5% by weight, and the palmitic acid residue amount / palmitic acid residue total amount (weight ratio) bonded to the 2-position is 0.4 to 0.95. In the whole oil and fat composition, MPM, OPM And the oil-and-fat composition whose total content of OPO triglyceride is 30 to 90 weight% and whose content of MMM triglyceride is 10 weight% or less.
(However, M: caprylic acid or capric acid, P: palmitic acid, O: oleic acid.)   The oil and fat composition according to claim 1, wherein the content of OPM is 10 to 90% by weight in the whole oil and fat composition.   Component (A) that is at least one selected from the group consisting of medium chain fatty acid triglycerides (MCT), caprylic acid and capric acid, palm oil, palm fractionated oil, palm oil or palm fractioned oil transesterified oil, random ester Exchanged palm stearin and oleic acid transesterified oil, lard, lard fractionated oil, rice oil, cottonseed oil, peanut oil, sesame oil, olive oil, corn oil, soybean oil, sunflower oil, high oleic sunflower oil, safflower oil, high olein Component (B), which is at least one selected from the group consisting of flower oil, rapeseed oil, beef tallow, cacao butter, tripalmitin, palmitic acid and oleic acid, in the whole mixture, the component (A) and the component (B ) And the weight ratio of component (A) / component (B) is 10 / 90-60 40. The mixture containing less than 10% by weight of the component (C) comprising milk fat is transesterified with a lipase having a 1,3-position specific lipase. The manufacturing method of the oil-fat composition of 2 (however, at least one of the said component (A) and a component (B) is fats and oils or tripalmitin).   The foodstuff which contains 0.5-30 weight% of the oil-fat composition of Claim 1 or 2 in the whole foodstuff.   The food according to claim 4, wherein the food is any one of a nursing food for ingesting a high-mouthed lip for the elderly, an enteral nutrient, and a formula for infants, pregnant women and lactating women.